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Analysis

  • max time kernel
    144s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    25/12/2024, 00:38

General

  • Target

    JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

  • Size

    833KB

  • MD5

    879fe8251f7e362c8b786a1a1d03586c

  • SHA1

    2dc5de3cee375f4630e4d70ee371523e93c36f01

  • SHA256

    6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7

  • SHA512

    fc46f174dcde80fe8a4341c778e6dd2d2b7c32cdf8a3cfedc24b88b63dd8ee36d89cae9986d02980ce55c68fa3f282a86d093825ca5fa20bb1879eacadbac70e

  • SSDEEP

    24576:a4OqOuOCUS9cCh+goT9zxRA0EtQflzp9FEitw:aYUe3UgoT9PAbE79FEd

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/lancer/get.php

Attributes
  • extension

    .gtys

  • offline_id

    qwVQoIsE2xLety0oNWloOilSDuIBXJGK86LM3ot1

  • payload_url

    http://zerit.top/dl/build2.exe

    http://fuyt.org/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-fnn5kv33Vv Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0439JIjdm

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1780
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
      "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2184
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\fb5c15a6-2c22-4b4f-a9b0-2c8b7b5eec3a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2812
      • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
        "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2744
        • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe
          "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:2600

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    071f6c96cd38ea431e1154891758d965

    SHA1

    ec125b460ecc9af8046b3d7e22c7ab8ff799b2a1

    SHA256

    9f983c1b45c671775ae04c5206557c7387034b292b1d6daeeeed2f1d7fade529

    SHA512

    c7673731165aebce8e89e07fc5ed9ea3b7a0f96bf8c32869faa0f8935a839fae4579379e3398b363f3d28fa16d1c49efff205bc4e88436b0975dc00d37737963

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    064111d4c0431099f9ba7fc2932216ea

    SHA1

    b02bed6452324f3a5c87815c6df7ec2d2b15827d

    SHA256

    e0f6ac95ac1fe746ddaeddc61ced5e01add5622b85e1b254c8c9b01059b7bee3

    SHA512

    12190c5423c9959ea2f884c0d192536fcea8c47415f8f06e7342b19fa5928dd54cfd3e1e98943101d6ae1d9a1152b721c38222855d123b5d5c59cb46deee14b2

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    8737f283051a32effb1bf8cc01eb5b50

    SHA1

    602a9f8a93c0e0befd4a86e5d5ca0a3e9b549bc9

    SHA256

    674dbc8694b236d8a97460861cc1542b46234f434a699b6ad0ef3d19b1d1faec

    SHA512

    25b7c867cdc8f8b0a599121fc7329c92209d03f5f7e6502809224d98e76057b9d9589bfd1c7602b04eee42812e2db2f2f05ff81f8f5241b222a8e222397cf541

  • C:\Users\Admin\AppData\Local\Temp\CabF48C.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\Local\fb5c15a6-2c22-4b4f-a9b0-2c8b7b5eec3a\JaffaCakes118_6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7.exe

    Filesize

    833KB

    MD5

    879fe8251f7e362c8b786a1a1d03586c

    SHA1

    2dc5de3cee375f4630e4d70ee371523e93c36f01

    SHA256

    6390fa58f057c07b623dcfe73a9cf1d79a327e486351aee910d1aa5bd058bfe7

    SHA512

    fc46f174dcde80fe8a4341c778e6dd2d2b7c32cdf8a3cfedc24b88b63dd8ee36d89cae9986d02980ce55c68fa3f282a86d093825ca5fa20bb1879eacadbac70e

  • memory/1780-56-0x0000000001EA0000-0x0000000001FBB000-memory.dmp

    Filesize

    1.1MB

  • memory/1780-0-0x0000000000340000-0x00000000003D1000-memory.dmp

    Filesize

    580KB

  • memory/1780-5-0x0000000001EA0000-0x0000000001FBB000-memory.dmp

    Filesize

    1.1MB

  • memory/1780-6-0x0000000000340000-0x00000000003D1000-memory.dmp

    Filesize

    580KB

  • memory/1780-1-0x0000000000340000-0x00000000003D1000-memory.dmp

    Filesize

    580KB

  • memory/2184-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2184-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2184-29-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2184-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2184-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2600-55-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-38-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-39-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-54-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-57-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-61-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-73-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-70-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-72-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2600-74-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2744-37-0x0000000000400000-0x0000000000514000-memory.dmp

    Filesize

    1.1MB

  • memory/2744-32-0x0000000000400000-0x0000000000514000-memory.dmp

    Filesize

    1.1MB

  • memory/2744-31-0x0000000000590000-0x0000000000621000-memory.dmp

    Filesize

    580KB